<div id="container1">
	<a id="selectFile1"><img src="" ng-src="{{conf}}" alt="" id="previewImg1" /></a>
</div>
<style>
	#container1 {
		width: 250px;
		height: 190px;
	}
	#selectFile1 {
		display: block;
		width: 100%;
		height: 100%;
	}
	#selectFile1 > img {
		width: 100%;
		height: 100%;
	}
</style>